Datasheet

LTM4625
7
Rev D
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BLOCK DIAGRAM
DECOUPLING REQUIREMENTS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
C
IN
External Input Capacitor Requirement
(V
IN
= 4V to 20V, V
OUT
= 1.5V)
I
OUT
= 5A 4.7 10 µF
C
OUT
External Output Capacitor Requirement
(V
IN
= 4V to 20V, V
OUT
= 1.5V)
I
OUT
= 5A 22* 47* µF
*Additional capacitance may be required under extreme temperature and/or capacitor bias voltage conditions due to variation of actual capacitance over bias voltage and temperature.
Figure 1. Simplified LTM4625 Block Diagram
POWER CONTROL
FB
60.4k
1µF
20k
0.1µF
R
FB
40.2k
0.1µF
C
IN
10µF
25V
INTV
CC
V
OUT
MODE
TRACK/SS
RUN
V
IN
CLKIN
CLKOUT
PHMODE
COMP
1µF
V
OUT
V
IN
SV
IN
10k
PGOOD
V
OUT
1.5V
5A
V
IN
4V TO 20V
INTV
CC
GND
1µH
4625 BD
FREQ
162k
INTERNAL
COMP
SGND
INTERNAL
FILTER
C
OUT
47µF
6.3V
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